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Stack and reach

Some tubes use estimated defaults where OEM values were missing.

Measurement	BastionRoad 2018	BastionRoad 2017
Stackmm	564	564
Reachmm	394	394
Head tube angle°	73.2	73.2
Seat tube angle°	73.5	73.5
Chainstaymm	408	408
Wheelbasemm	994	994
BB dropmm	70	70
BB heightmm	—	—
Standovermm	—	—

Relaxed/Aggressiveness

Add a close match

Specialized Tarmac SL8 2025Near Bastion Road · 52 · 527 mm / 380 mmAdd to this compare
Specialized Tarmac SL8 2024Near Bastion Road · 52 · 527 mm / 380 mmAdd to this compare
Specialized Tarmac SL8 2026Near Bastion Road · 52 · 527 mm / 380 mmAdd to this compare

Cockpit for the selected size

Part	Road 56	Road 56
Stem	100 mm	100 mm
Bar	420 mm	420 mm
Crank	172.5 mm	172.5 mm

Reviews

Bastion Road

Review Bastion Road Disc: what's this exclusive racing machine capable ...GRAN FONDO Cycling Magazine · 2018
Test Bastion Road Disc – how does our 15 Grand Australian ride? Our test bike in size 52 has a very sporty geometry. The long top tube (460 mm ...
Bike Review: Bastion Road Disc - Bicycling AustraliaBicycling Australia · 2018
It implies being able to look into the future and see things coming.” A high-end build. This sentiment is visible in the Bastion Road Disc ...